# Questions On Square Roots & Cube Roots Aptitude Test Problems

## Square roots & Cube Roots

Square roots

To find the square root of a given number, we want to find some number that when multiply by itself which gives the original number. Or in other words, to find the square root of 9, we have to find the number that when multiply by itself gives us 9. The square root of 9, then, is 3.

The following is the list of first eleven perfect square roots

- 0 = 0
- 1 = 1
- 4 = 2
- 9 = 3
- 16 = 4
- 25 = 5
- 36 = 6
- 49 = 7
- 64 = 8
- 81 = 9
- 100 =10

The symbol of square root is the radical sign. In square root, an index of two is understood. If there is no sign is placed in front of the square root, then the positive answer is required. If a negative sign is placed in front of the square root, then the answer must be negative answer.

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Cube Roots

If we want to find the cube root for a number, then we have to find some number that when multiplied by itself twice gives us the original number. For example, to find the cube root of 125, we have to find the number that when multiplied by it twice gives 125. Thus the cube root of 125 is 5 because 5*5*5 = 125.

The symbol of cube root is the radical sign with a small three called as the index above and identified by the index sign.

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